The solar system is broken

I was almost imprisoned again because of my impulse.

Fortunately, Huo Shan had a good attitude towards admitting his mistakes. The thin man only gave Huo Shan a few words of lecture before sending him to the door of 205.

"Mr. Huo, are you proficient in fighting? No, kung fu? Yes, kung fu..." Xi Gai's face was very excited. He saw with his own eyes that Huo Shan was beaten to the point where he lost his fighting ability in just a few seconds.

"It doesn't count," Huo Shan leaned against the door, tore off a small film and carefully rolled it in his hand.

"Does your move have a cool name? For example, embroidered dragon...eighteen punches." Xi Gai is a film and television fan and has some unrealistic ideas about kung fu, "Or can you fly around?

?What’s it called...”

"Qinggong?"

"Yes, yes, Qinggong."

"Want to learn?" Without any nonsense, he directly asked Xigai what he wanted to say most.

"think."

"Why?"

"Very handsome~"

Huo Shan did not answer. Xi Gai thought that his answer failed to impress an expert like Huo Shan. "It was also for the sake of chivalry and righteousness."

"Very good," Huo Shan nodded, and the things were already in hand.

"Can we become apprentices now?"

"No," what a joke. In order to learn martial arts, Huo Shan gave up his surname and learned it from his parents. Wouldn't it be a shame for a foreigner to just ask someone to learn martial arts?

"This..." Lost.

Huo Shan raised his hand and patted Xi Gai on the shoulder, "You don't have to be my disciple. If you give me a piece of steak, we will be friends, and I can also teach you some basic fighting skills."

"You know, I didn't eat enough for lunch!"

But Xigai shook his head, "I'm afraid that's not possible, sir. The food in the prison cannot be exchanged at will."

"I know the Tianshan Plum Blossom Hand, the Sad Ecstasy Palm, the Hundred Thousand Dragon Subduing Palm, and well... and the Ten Thousand Sword Return to the Sect!" Temptation.

"Will I be very good if I learn it?" The prison guard was a little moved.

In fact, food is not particularly strict, it just needs to give the warden some benefits.

If Xigai wants to bring it in, he can do it with some effort.

How do you say "this..."?

The primary reason why Chinese martial arts does not prosper is that the cycle is too long, and it is a lifelong process, so it must be started at an early age.

Xi Gai Shao said that he is already 30 years old, and the best time for body shaping has passed.

If you practice hard, the upper limit won't be too high.

"You know the brother's flowing water barbecue technique and the mountain-shaking and wall-building technique. In short, if you practice diligently, you will have a bright future."

Martial arts are not that important. As the saying goes, the humblest person is invincible.

"I heard that the Chinese..."

"No, it doesn't matter." Huo Shan felt that he was too annoyed. "You are not Chinese, so keep everything simple."

"I mean..."

"No, you give me a pen tonight and I will write you secrets." Huo Shan said seriously, "Of course, I will personally guide you on how to practice. You have to get me steak."

"make a deal."

Seeing Huo Shan's "sincerity", Xigai immediately promised to deliver the steak with pen and paper tonight, but it would be a little later.

Huo Shan said that he would not want the prison meal, and shook hands. The two of them looked at each other and smiled, and both saw cunning in the eyes on the other side.

"call!"

Huo Shan let out a sigh of relief. It's not good to be too enthusiastic. Xi Gai may have already targeted him. It's best to make a plan immediately.

Go to the bed, lie down, and unfold a layer of film in your hand.

This was the inner wall of the milk carton. Huo Shan peeled it off and pasted it on the combination lock at the door.

How to put it on is a long story.

During lunch, Huo Shan deliberately knocked over the dinner plate. While the prison guard lowered his head, Huo Shan inserted the wet toilet paper into the groove of the access door cover.

Because the cover piece is made of toilet paper, it is naturally not tightly closed and can be pushed open with force from the inside.

The prison guard just said that the cover was rusted and the cover was not tight, so he didn't care too much. This situation is very common in prisons.

Huo Shan waited for an opportunity, pushed up the cover, and covered the endometrium with the electronic lock.

This kind of electronic lock is very laborious to press, and naturally leaves a lot of marks on the film.

However, although we know the numbers, there are still several questions.

The first is the problem of repetition. Pressing a number repeatedly will leave only a mark on the endometrium.

However, the solution is very simple. Every time Huo Shan opens the door, he listens carefully to the sound of the button. There are 4 sounds in total, which means the password is four numbers.

The second issue is the arrangement of numbers.

This problem is more serious. A 4-digit password means that there are a(4,4)=4*3*2*1=24 permutations. This is a permutation and combination problem.

Generally, a normal electronic lock has the function of automatically locking after 5 inputs, which means Huoshan only has 5 chances, otherwise the door is very likely to be locked and trigger the alarm.

"5/24?" 20% probability.

Huo Shan feels that the idea of ​​relying on luck is undesirable.

Lifting up the thin endometrium, Huo Shan found only three marks.

??

Not printed?

Huo Shan felt a little incredible.

I stood up, but...I felt relieved immediately.

He saw the huge imprint of the number 4, and Huo Shan breathed a sigh of relief.

There are two 4s in the password, which means that the probability of the password is halved, that is, the probability is 5/12.

This is a classification discussion. First, we will

Average?

It’s still not enough. There is only a difference between 0% and 100% jailbreaking. There is no intermediate probability. It is best to solve all problems before starting.

"From the direction of force application," Huo Shan's eyes widened.

It's a pity that this endometrium failed to meet Huo Shan's expectations. After all, its cost was too low and it could not fully record the movements of the prison guards.

Looking at the huge mark, Huo Shan was slightly lost in thought.

"What gesture would a person use if he entered the same number consecutively?"

Huo Shan stretched out his hand, hung it in mid-air, and narrowed his eyes.

The key to this proposition is the word continuous, then...

The principle of labor saving tells us that people are always lazy consciously or unconsciously. If they click continuously, their fingers will only be lifted slightly. In other words, there will be no huge marks like two marks on the inner membrane.

.

Therefore, there are no two consecutive 4's in the correct answer to this password.

It’s still the permutation and combination problem. Now there are 4 numbers, two of which are discontinuous and repeated. How many possibilities are there?

The first fill-in-the-blank question in high school mathematics made Huo Shan smile.

Classification discussion, two categories, two non-repeating numbers are adjacent and two non-repeating numbers are not adjacent. Simple calculation can get 6 types.

(i.e. a(2,2)c(1,2)*c(1,2)=6)

(Actually, it’s okay to count. It’s not much. Don’t ask me how I know that.)

5/6 is already a very high probability event. For the remaining 1/6, Huo Shan can only pray for Murphy's Law.

Hold the film tightly in your hand and crush it in the palm of your hand. This is a very high level of control.

Just after the Spring Equinox, the days in the Southern Hemisphere are longer and the length of night has moved back by more than an hour.

It's 6 o'clock now, Huo Shan can still take a nap.

Looking at the ceiling, Huo Shan was speechless. His consciousness had begun to become more alert.

No sleepiness~

After coming here for a long time, the electric bell rang at the end of the night.

The thin man pushed the dining cart and set off.

Huo Shan's ears immediately perked up. He heard Xigai's complaint, "Man, you always smoke and have fun alone, so let me deliver the food alone..."

"Tonight girl, I will let you..." Hehe, the fat man's obscene laughter echoed in the narrow passage.

"Okay then~" He whispered again, "As for the steak, you can have some snacks~"

"Don't worry, buddy~ I'll bring it to you later. Goodbye~"

"goodbye."

The fat man went to smoke, and the thin man went to deliver food. This is an opportunity.

Dang Dang Dang!

The thin man knocked on the first door.

Huo Shan's heart was in his throat like the knock on the door. Such an exciting situation actually happened to him.

"Huh~" Huo Shan breathed a long sigh of relief.

15 minutes, maybe longer, the steak may take 20 minutes to arrive.

He was not blind, but calmly waited for the thin man to disappear into the depths of the L-shape.

Dang Dang Dang!

The second door.

It's time.

Huo Shan gently pushed up the cover and reached out to the combination lock.

There are nine grids, and you can clearly perceive their order without looking at Huo Shan.

Didi didi~

Didn't open it the first time.

Huhu~ Huo Shan took a deep breath.

There are four more chances, everything is not that bad, come on.

After frantically giving myself hints, I finally mustered up the courage to start the second operation.

Didi didi!

It's open.

.....

Isn't that a bit hasty?

But Huo Shan didn't pay much attention.

He took out his hand, closed the flap, and stretched his head to look at the corridor outside.

Not surprisingly, there was no one at all.

Huo Shan gently closed the door behind him.

Then he did not go directly to open the door of the solitary room next door, but entered the guard's room, called up the latest surveillance, subtracted what happened ten minutes ago in corridors 205 and 205, and changed it to play the surveillance one hour ago.

Then go to the door of the confinement room next door and enter the password you just entered again. It opens.

Huo Shan guessed correctly. This kind of password lock cannot have one password for each door and the entire floor.

Close the door carefully.

The confinement room was dark, with no lights and no surveillance.

Huo Shan walked straight to the end of the solitary room, fumbled a few times in the dark, and successfully found the ventilation duct he had dreamed of.

Stand on tiptoes, remove the exhaust fan, and carefully place it under your feet.

Then he jumped and climbed up the ventilation duct.

Huo Shan was choked with asthma in an instant by the old gray, Ah Che~

Even though Huo Shan was careful, he couldn't suppress it.